Diffusion kinetics of samarium and neodymium in garnet, and a method for determining cooling rates of rocks

被引：197

作者：

Ganguly, J ^{[1
]}

Tirone, M

Hervig, RL

机构：

[1] Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA

[2] Arizona State Univ, Ctr Solid State Sci, Tempe, AZ 85287 USA

来源：

SCIENCE | 1998年 / 281卷 / 5378期

关键词：

D O I：

10.1126/science.281.5378.805

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Experimental determinations of the diffusion coefficients of samarium and neodymium in almandine garnet and theoretical considerations show that one cannot assign a sufficiently restricted range of closure temperature, T-c, to the samarium-neodymium decay system in garnet for the purpose of constraining the cooling rate. However, it is shown that the samarium-neodymium cooling age of garnet can be used to calculate both cooling rate and T-c if the temperature and age at the peak metamorphic conditions are known.

引用

页码：805 / 807

页数：3

共 17 条

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